TWL Food Acidulants
Below are some of the examples of food acidulants that I summarised:

Acetic acid

  • found in vinegar
  • has a characteristic pungent smell
  • widely used, particularly in the pickling industry.
  • naturally fermented vinegar has a variable pH and so acetic acid is added to this to form a pickling liquor with a specified acidity.

Citric acid

Used in food industry:

  • provide sharp taste in soft drinks and sweets
  • generate the optimum conditions for the formation of gels in jams, jellies, confectionary and desserts
  • help give the conditions for the stabilisation of emulsions (e.g. processed cheese and dairy products)
  • prevent the browning of salads
  • enhance the action of antioxidants and prevent deterioration in frozen food
  • act as an antioxidant in fats and oils
  • preserve meat products and help modify their texture during their processing

Fumaric acid

  • Strongest tasting food acidulant.
  • Has limited applications due to its very low solubility.
  • It is used in gelatin dessert powders, cheesecake mixes and some powdered drinks.
  • It is manufactured synthetically from malic acid.

Lactic acid

  • Widely used in the production of boiled sweets, pickled foods and as a raw material in the manufacture of important emulsifiers for the the baking industry.

Malic acid

  • Found naturally in apples, pears, tomatoes, bananas and cherries.
  • Has similar applications to citric acid and is the preferred acid in low calorie drinks, cider and apple drinks.
  • Slightly more expensive than citric acid.
  • It is produced commercially from maleic anhydride.